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Sleep Deprivation


Sleep Deprivation
Photo Information
Copyright: The dude who loves Frogs (AnimalExplorer) Gold Star Critiquer/Gold Note Writer [C: 1019 W: 9 N: 2202] (8292)
Genre: Animals
Medium: Color
Date Taken: 2002-10
Categories: Amphibians
Camera: Nikon D100, Nikkor 105mm f2.8 Macro
Photo Version: Original Version
Theme(s): Selen's Favorites, Amphibian, Our world at night. [view contributor(s)]
Date Submitted: 2007-11-01 4:05
Viewed: 1432
Favorites: 4 [view]
Points: 64
[Note Guidelines] Photographer's Note
Red-eyed Treefrog
(Agalychnis calidryas)

I photographed this in Central America with my old Nikon D100 back in 2002, it was a pretty good camera at the time.

Scientific name: Agalychnis calidryas
Family: Hylidae
Order: Anura
Class: Amphibia
PHYSICAL CHARACTERISTICS:
The average size of Agalychnis callidryas is no more than three inches. The Red-eyed Tree Frog is usually an extremely bright green with cream and sky blue along the rib and groin area. The hands and feet are marked with a bright orange and are also lined with blue and cream. The most recognizable physical characteristic of Agalychnis callidryas are their bright red eyes.
Agalychnis callidryas has other adaptive features. The long limbs on these frogs are better suited for climbing than swimming. Another feature is the sucker pads on the end of each digit. These pads allow the frogs to stick to various objects and provides better traction on wet leaves and branches. Most of the frogs that are in the Hylidade family have a third eye lid called a nictitating membrane. The purpose of this membrane is to shield the frog's sensitive eyes from various dangers. The lid is often brightly colored and does not completely restrict it's vision.

DISTRIBUTION and HABITAT:
Agalychnis callidryas are found in the neotropical rainforest of central America. This species of frog is completely arboreal or tree dwelling and they are excellent jumpers. These frogs rarely descend to the ground and move in a very stealthy and deliberate manner. They are completely nocturnal.
BEHAVIOR:
Bright markings along the sides and on the limbs function to reduce predation. Most of the predators that prey on Agalychnis callidryas often rely on their vision. When the frog moves to avoid the predator the bright colorations come into view. Because the predator is so locked onto it's target, when these bright colors flash into view (hence their name, flash colors) they throw off the predator. This is achieved by leaving a ghost image in the visual field of where the frog was originally. This confuses the predator and gives the frog time to hide. In other cases, these bright colors often startle the predator and throws them completely off. These flash colors are often well hidden and are only shown when the animal is moving.




Paul Bratescu Copyright 2007 All rights reserved
horia, SelenE, JoseMiguel, jrobertop, kjpweb, Argus, fartash, moultipasseu, mirceax, Servane, marhowie, Kathleen, jcoowanitwong, kmr13777 has marked this note useful
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Critiques [Translate]

fantastic frog with red eyes
well focused
good details and great colors
well done Dude

tfs sERGIO

  • Great 
  • horia Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2048 W: 212 N: 3667] (12200)
  • [2007-11-01 5:07]

Hi Paul and nice to see you back!

I've seen tihs one before and it definitely had a special place among my favorites :) I do love what you've done here, too - with this full-frontal POV. It actually gives us a better view for the exact orientation of those impressive eyes on the little frog's head...and boy they're BIG! :))
In term of sharpness and colors, your photo is flawless as usual!
The shallow DOF works well and (if it was ever needed) concentrates the entire attention of the viewer strictly on the eyes.
Brilliant work!

Bravo, my dear friend and TFS
Horia

  • Great 
  • SelenE Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2308 W: 59 N: 3689] (11822)
  • [2007-11-01 5:14]

Hi Paul,
Great capture! Bravo and TFS
Have a nice day,
Selen

  • Great 
  • radz Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 601 W: 11 N: 599] (3161)
  • [2007-11-01 5:36]

Wow superb close up shot!!
DOF&POV is very good.
TFS!

  • Great 
  • jossim Gold Star Critiquer/Gold Note Writer [C: 1676 W: 5 N: 2144] (11868)
  • [2007-11-01 5:37]

Bonjour Paul,
Excellente prise,les couleurs sont superbe et le focus très bien réalisé.
Merci!
Joseph

Hi Paul,
A pretty amazing capture!
Just look at these eyes with all that veins.
I like so much the close approach, textures caught, and the composition made.
The reds and greens are a so vibrant combination.
As always, a high quality image!
My compliments and thanks for share it.
Best regards,
JM

Hello Paul.
Wonderful frog! Exuberant colors!
Excellent sharpness and contrast.
Congratulations for the wealth of details.
Thanks for sharing!
Best wishes,
José Roberto

Excellent. Wonderful colors and detail with great focus. Kudos! Cheers, Klaus

  • Great 
  • joey Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1589 W: 242 N: 5308] (18683)
  • [2007-11-01 6:55]

Paul, Paul, Paul... you are just too good!!
Every time I think you've taken the world's best animal shot... you come up with another even better one!
+++ The POV is fantastic, really emphasising those huge goggly eyes. They actually use thier eyes to scare off would-be predators! Very well composed aswell.
The colours are spectacular! I love the bright red eyes and orange feet. Perfect lighting that shows the colours at thier best.
Very sharp with great detail in the skin showing every dimple and wart.
Perfect DOF and a great BG.
Very readable notes aswell :D
--- Of course... nothing!!
Extremely well done,
Joe

  • Great 
  • Argus Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2500 W: 132 N: 7109] (22209)
  • [2007-11-01 7:52]

Hello Paul,
Great title to a great close-up of this Red-eyed Tree Frog. Considering the age of this digital photo the quality is excellent. Good composition too.
TFS,
Ivan

Hello Paul
Wonderful shot of this Treefrog,
Great detials,exposure and use of flash,
Superb shot,Welldone.

Regards
Fartash

Hi, I love pizza too (as I'm italian ;)

Very nice image, excellent quality, I like a lot the title you chose too

Well done!

Gio

  • Great 
  • ddg Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 880 W: 23 N: 926] (4989)
  • [2007-11-01 10:34]

Bonjour Paul, cette macro de tête de grenouille est réussie!! Bon cadrage, well done, congratulations, Didier.

Hi the Dude

Juste un mot ... wahowww
quels yeux et quelles couleurs
TFS

*aurélie*

bonjour
tres impressionnante cette grenouille et une photo magnifique,nette et haute en couleurs.
felicitations.
laurent

  • Great 
  • pirate Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 450 W: 100 N: 572] (2879)
  • [2007-11-01 12:22]

Hi Paul
great sharpness all over the head with lovely compo
tfs
tom

Go pizza go!!!
Great composition, color and sharpness!!!

Hello Paul,
What a great macro shot!! Very outstanding colours and details with excellent composition & POV, also perfect focusing and nice DOF, very well done!!
TFS and best wishes,
Kevin

Hi Paul,
Another amazing shot from you ! I love the POV in this photo, great details and colours too.
tfs

Mircea

  • Great 
  • lousat Gold Star Critiquer/Gold Note Writer [C: 937 W: 5 N: 2456] (9197)
  • [2007-11-01 16:41]

2 points are not enough for this fantastic pic,thanks for share,Luciano

Love your title. I've felt just like that on occasion. The colors here are so wonderful. Super shot.

TFS
Evelynn : )

  • Great 
  • Mana Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 1683 W: 24 N: 4905] (15988)
  • [2007-11-01 23:34]

Hi Paul,
Just marking this wonderful post from you for now and will come back later with a proper critique. Sorry tied up with an urgent assignment.
Regards.
Sumon

Perfect focus and amazing colors!
The details are so clear, it's a fantastic work!

Thank you.

Servane

  • Great 
  • Luis52 Gold Star Critiquer/Gold Note Writer [C: 1015 W: 5 N: 2759] (10010)
  • [2007-11-02 9:36]

Hola Paul. Muy Muy bella la foto, yo diria "fantastica" Me agrada mucho el color y tamaño de los ojos de esta pequeña Ranita. Exelente trabajo Paul. Saludos Luis52.

Dude! Another eye catching image.
You nailed that DOF right between the eyes ;}
Excellent work with the D100.
Howard

Hi Paul
Notes are great, amazing about the colour flash to throw off predators, great wee character this red-eyed tree frog.
Stunning image to go with your notes, superb colour and detail.
It mentions he is totally nocturnal, so I will put him through to my theme, Our world At night.
Kathleen

  • Great 
  • manyee Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 3069 W: 231 N: 5841] (19634)
  • [2007-11-21 16:08]

Hi Paul,
So you have been holding out on us, huh?
Great shot of this red-eyed beauty.
I so wanted to see one of these while in Costa Rica, but only managed to see one in the ranarium near Monteverde, under less than natural conditions. : P
Anyway, this is extremely sharp and I love the "in-your-face" POV. How can one resist those huge red eyes?
TFS. : )

Hi Paul,
Very beautiful Red-eyed treefrog. Those big red eyes are wonderful and the skin texture is well captured. Hope that this species is still alive and well in Central America.
JC

Paul,
this is like one of the best i have ever seen. Gone to my favourites.

TFS
Kirti

  • Great 
  • arfer Gold Star Critiquer [C: 2731 W: 0 N: 0] (0)
  • [2008-03-08 21:08]

Hello Paul

This is how I feel most mornings.
A well tilted shot of this beautiful and colourful frog.
Excellent colour saturation and lovely lighting.
The POV is superb.
Razor sharp focus and details.
TFS

Rob

Hi Paul,
Beautiful portrait,very good photo.
Best regards,
Ralf

  • Great 
  • madmon (10)
  • [2008-07-24 4:29]

Hi paul
great picture love the vivid colours and the comp thanks,
monica

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